node.js - 有条件地包含依赖 package.json

Question

我有一个 npm 项目中只有 Mac OS 需要的依赖项，我想知道是否有某种方法可以仅在兼容平台是运行 npm install 的平台时有条件地包含此依赖项。

我愿意为此编写逻辑。在下面的例子中，grunt-appdmg 导致 npm 安装过程出错(出于相当明显的原因):

'/dev/cuttle/node_modules/grunt-appdmg/node_modules/appdmg/node_modules/ds-store/node_modules/macos-alias/build'
  CXX(target) Release/obj.target/volume/src/volume.o
../src/volume.cc:9:2: error: #error This platform is not implemented yet
 #error This platform is not implemented yet

包.json

{
  "name": "Cuttle",
  "homepage": "https://github.com/oakmac/cuttle",
  "license": "MIT",
  "repository": {
    "type": "git",
    "url": "https://github.com/oakmac/cuttle.git"
  },
  "dependencies": {
    "fs-extra": "0.16.3",
    "open": "0.0.5",
    "winston": "0.8.3"
  },
  "devDependencies": {
    "grunt": "0.4.5",
    "grunt-contrib-less": "0.11.4",
    "grunt-contrib-watch": "0.6.1",
    "grunt-curl": "2.0.3",
    "grunt-download-atom-shell": "0.10.0",
    "grunt-appdmg": "0.2.0",
    "winresourcer": "0.9.0",
    "moment": "2.9.0",
    "shelljs": "0.3.0"
  }
}

Answer 1

您可以使用可选的依赖项。

在你的 package.json 中像这样:

"optionalDependencies":{
  "grunt-appdmg":"0.2.0"
}

有关 NPM documentation 的更多信息

如果失败，

npm install 将跳过它。